package com.itheima.a04test;

public class myTest1 {
    public static void main(String[] args) {
//        ArrayList<String> list=new ArrayList<>();
//        Collections.addAll(list,"2","1","1");
//        System.out.println(list.size());

        int[] arr=new int[10];
        arr[0]=1;
        System.out.println(arr.length);
    }
}
